The hacker group Anonymous has had a busy week doing what they do best — hacking.

“Today, Nov. 4, 2012, our security team became aware of the public posting of VMware ESX source code dating back to 2004. This source code is related to the source code posted publicly on April 23, 2012,” VMware wrote on its Security and Compliance blog. “It is possible that more related files will be posted in the future. We take customer security seriously and have engaged our VMware Security Response Center to thoroughly investigate.”

Anonymous also claimed to have hacked PayPal and leaked confidential information, including coded passwords and phone numbers, from approximately 28,000 PayPal accounts.

PayPal has issued a statement saying they are investigating but have yet to find evidence of this breach.